Synergistic Effects Between Phosphonium-Alkylphosphate Ionic Liquids and Zinc Dialkyldithiophosphate (ZDDP) as Lubricant Additives

Unique synergistic effects between phosphonium‐alkylphosphate ionic liquids (ILs) and zinc dialkyldithiophosphate (ZDDP) are discovered when used together as lubricant additives, resulting in significant friction and wear reduction along with distinct tribofilm composition and mechanical properties....

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2015-08, Vol.27 (32), p.4767-4774
Main Authors: Qu, Jun, Barnhill, William C., Luo, Huimin, Meyer III, Harry M., Leonard, Donovan N., Landauer, Alexander K., Kheireddin, Bassem, Gao, Hong, Papke, Brian L., Dai, Sheng
Format: Article
Language:English
Subjects:
Additives
Anion exchanging
Fluid dynamics
Friction
friction and wear reductions
Ionic liquids
lubricant additives
Lubricants
MATERIALS SCIENCE
Synergistic effect
synergistic effects
ZDDP
Zinc dialkyldithiophosphates
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Summary:Unique synergistic effects between phosphonium‐alkylphosphate ionic liquids (ILs) and zinc dialkyldithiophosphate (ZDDP) are discovered when used together as lubricant additives, resulting in significant friction and wear reduction along with distinct tribofilm composition and mechanical properties. The synergism is attributed to the remarkably 30–70× higher‐than‐nominal concentrations of hypothetical new compounds (via anion exchange between IL and ZDDP) on the fluid surface/interface.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201502037